Garth Brooks' Tulsa, Okla., concerts, scheduled for January 2015, just went on sale this morning (Nov. 14), but already the country legend has broken a record ... and added more shows.

Originally, Brooks scheduled performances on three dates at Tulsa's BOK Center -- January 15, 16 and 17 -- but he has now added four additional shows: Jan. 9 at 7 PM, Jan. 10 at 7 PM and 10:30 PM and Jan. 11 at 7 PM.

So far, Brooks has sold more than 90,000 tickets for the Tulsa run. That breaks his own record for ticket sales in the city, which he set in 1997 by selling 79,855 tickets to five shows at Driller Park.

Tickets for all of the concerts are on sale now through Ticketmaster’s website or by phone at 1-800-745-3000 or 1-866-448-7849. There is an eight-ticket limit per purchase. Tickets will cost $57.13, plus $4.87 in tax, a $2 facility fee and a $6 service charge, totaling $70.

Brooks’ new album, ‘Man Against Machine,’ was released on Nov. 11. See a full list of his tour dates here.